Compatible Models: The Sport Silicone Strap‘s Compatible with Apple Watch 38mm 40mm 41mm, 49mm 45mm 44mm 42mm.Compatible with Apple Watch Series SE Series SE2 Series 8 7 6 5 4 3 2 1 Premium Silicone Material: Made of premium silicone material, soft lightweight, skin-friendly comfortable, waterproof durable, smooth and does not irritate the skin. sporty silicone material can bring you a comfortable wearing experience for your daily, the best good choice for sport or exercise Magnetic Clasp Design: New metal magnetic clasp, use moving the magnetic clasp can change wristband size to the suitable for different wrists. which is super magnetic and can ensure the safety of your watch during strenuous exercise from falling off, locks onto the wrists precisely and securely, and is easy to adjust, comfortable to wear Free Size: Two sizes are available for you to choose from. 38mm/40mm/41mm size fits 5.1inch-7.4inch(130mm-190mm) wrists, 42mm/44mm/45mm/49mm size fits 5.5inch-8.2inch(140mm-210mm) wrists, please before buying check to confirm your wrist size and watch models Easy to Installation: The silicone band comes with watch lugs on both ends, which locks onto the watch interface precisely and securely. without any tools, easy to install and removed with one click. easy to change different colors & styles for every occasion to wear